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0e8cc8bd WJ |
1 | /* |
2 | * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. | |
3 | * | |
4 | * Copyright (C) 2002-2007 Aleph One Ltd. | |
5 | * for Toby Churchill Ltd and Brightstar Engineering | |
6 | * | |
7 | * Created by Charles Manning <charles@aleph1.co.uk> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
90ef117b WJ |
14 | /* XXX U-BOOT XXX */ |
15 | #include <common.h> | |
16 | ||
0e8cc8bd WJ |
17 | #include "yportenv.h" |
18 | ||
19 | ||
20 | #include "yaffs_mtdif.h" | |
21 | ||
b5bf5cb3 MY |
22 | #include <linux/mtd/mtd.h> |
23 | #include <linux/types.h> | |
24 | #include <linux/time.h> | |
6ae3900a | 25 | #include <linux/mtd/rawnand.h> |
0e8cc8bd | 26 | |
0e8cc8bd | 27 | |
753ac610 | 28 | static inline void translate_spare2oob(const struct yaffs_spare *spare, u8 *oob) |
0e8cc8bd | 29 | { |
753ac610 CM |
30 | oob[0] = spare->tb0; |
31 | oob[1] = spare->tb1; | |
32 | oob[2] = spare->tb2; | |
33 | oob[3] = spare->tb3; | |
34 | oob[4] = spare->tb4; | |
35 | oob[5] = spare->tb5 & 0x3f; | |
36 | oob[5] |= spare->block_status == 'Y' ? 0 : 0x80; | |
37 | oob[5] |= spare->page_status == 0 ? 0 : 0x40; | |
38 | oob[6] = spare->tb6; | |
39 | oob[7] = spare->tb7; | |
0e8cc8bd WJ |
40 | } |
41 | ||
753ac610 | 42 | static inline void translate_oob2spare(struct yaffs_spare *spare, u8 *oob) |
0e8cc8bd | 43 | { |
753ac610 CM |
44 | struct yaffs_nand_spare *nspare = (struct yaffs_nand_spare *)spare; |
45 | spare->tb0 = oob[0]; | |
46 | spare->tb1 = oob[1]; | |
47 | spare->tb2 = oob[2]; | |
48 | spare->tb3 = oob[3]; | |
49 | spare->tb4 = oob[4]; | |
50 | spare->tb5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; | |
51 | spare->block_status = oob[5] & 0x80 ? 0xff : 'Y'; | |
52 | spare->page_status = oob[5] & 0x40 ? 0xff : 0; | |
0e8cc8bd | 53 | spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; |
753ac610 CM |
54 | spare->tb6 = oob[6]; |
55 | spare->tb7 = oob[7]; | |
0e8cc8bd WJ |
56 | spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; |
57 | ||
58 | nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ | |
59 | } | |
0e8cc8bd | 60 | |
753ac610 CM |
61 | |
62 | int nandmtd_WriteChunkToNAND(struct yaffs_dev *dev, int chunkInNAND, | |
63 | const u8 *data, const struct yaffs_spare *spare) | |
0e8cc8bd | 64 | { |
753ac610 | 65 | struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context); |
0e8cc8bd | 66 | struct mtd_oob_ops ops; |
0e8cc8bd WJ |
67 | size_t dummy; |
68 | int retval = 0; | |
753ac610 CM |
69 | loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk; |
70 | u8 spareAsBytes[8]; /* OOB */ | |
0e8cc8bd WJ |
71 | |
72 | if (data && !spare) | |
dfe64e2c | 73 | retval = mtd_write(mtd, addr, dev->data_bytes_per_chunk, |
0e8cc8bd WJ |
74 | &dummy, data); |
75 | else if (spare) { | |
753ac610 | 76 | if (dev->param.use_nand_ecc) { |
0e8cc8bd | 77 | translate_spare2oob(spare, spareAsBytes); |
dfe64e2c | 78 | ops.mode = MTD_OPS_AUTO_OOB; |
0e8cc8bd WJ |
79 | ops.ooblen = 8; /* temp hack */ |
80 | } else { | |
dfe64e2c | 81 | ops.mode = MTD_OPS_RAW; |
0e8cc8bd WJ |
82 | ops.ooblen = YAFFS_BYTES_PER_SPARE; |
83 | } | |
753ac610 | 84 | ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen; |
0e8cc8bd WJ |
85 | ops.datbuf = (u8 *)data; |
86 | ops.ooboffs = 0; | |
87 | ops.oobbuf = spareAsBytes; | |
dfe64e2c | 88 | retval = mtd_write_oob(mtd, addr, &ops); |
0e8cc8bd | 89 | } |
0e8cc8bd WJ |
90 | |
91 | if (retval == 0) | |
92 | return YAFFS_OK; | |
93 | else | |
94 | return YAFFS_FAIL; | |
95 | } | |
96 | ||
753ac610 CM |
97 | int nandmtd_ReadChunkFromNAND(struct yaffs_dev *dev, int chunkInNAND, u8 *data, |
98 | struct yaffs_spare *spare) | |
0e8cc8bd | 99 | { |
753ac610 | 100 | struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context); |
0e8cc8bd | 101 | struct mtd_oob_ops ops; |
0e8cc8bd WJ |
102 | size_t dummy; |
103 | int retval = 0; | |
104 | ||
753ac610 CM |
105 | loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk; |
106 | u8 spareAsBytes[8]; /* OOB */ | |
0e8cc8bd WJ |
107 | |
108 | if (data && !spare) | |
dfe64e2c | 109 | retval = mtd_read(mtd, addr, dev->data_bytes_per_chunk, |
0e8cc8bd WJ |
110 | &dummy, data); |
111 | else if (spare) { | |
753ac610 | 112 | if (dev->param.use_nand_ecc) { |
dfe64e2c | 113 | ops.mode = MTD_OPS_AUTO_OOB; |
0e8cc8bd WJ |
114 | ops.ooblen = 8; /* temp hack */ |
115 | } else { | |
dfe64e2c | 116 | ops.mode = MTD_OPS_RAW; |
0e8cc8bd WJ |
117 | ops.ooblen = YAFFS_BYTES_PER_SPARE; |
118 | } | |
753ac610 | 119 | ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen; |
0e8cc8bd WJ |
120 | ops.datbuf = data; |
121 | ops.ooboffs = 0; | |
122 | ops.oobbuf = spareAsBytes; | |
dfe64e2c | 123 | retval = mtd_read_oob(mtd, addr, &ops); |
753ac610 | 124 | if (dev->param.use_nand_ecc) |
0e8cc8bd WJ |
125 | translate_oob2spare(spare, spareAsBytes); |
126 | } | |
0e8cc8bd WJ |
127 | |
128 | if (retval == 0) | |
129 | return YAFFS_OK; | |
130 | else | |
131 | return YAFFS_FAIL; | |
132 | } | |
133 | ||
753ac610 | 134 | int nandmtd_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber) |
0e8cc8bd | 135 | { |
753ac610 | 136 | struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context); |
0e8cc8bd | 137 | __u32 addr = |
753ac610 CM |
138 | ((loff_t) blockNumber) * dev->data_bytes_per_chunk |
139 | * dev->param.chunks_per_block; | |
0e8cc8bd WJ |
140 | struct erase_info ei; |
141 | int retval = 0; | |
142 | ||
143 | ei.mtd = mtd; | |
144 | ei.addr = addr; | |
753ac610 | 145 | ei.len = dev->data_bytes_per_chunk * dev->param.chunks_per_block; |
0e8cc8bd WJ |
146 | ei.time = 1000; |
147 | ei.retries = 2; | |
148 | ei.callback = NULL; | |
149 | ei.priv = (u_long) dev; | |
150 | ||
151 | /* Todo finish off the ei if required */ | |
152 | ||
0e8cc8bd | 153 | |
dfe64e2c | 154 | retval = mtd_erase(mtd, &ei); |
0e8cc8bd WJ |
155 | |
156 | if (retval == 0) | |
157 | return YAFFS_OK; | |
158 | else | |
159 | return YAFFS_FAIL; | |
160 | } | |
161 | ||
753ac610 | 162 | int nandmtd_InitialiseNAND(struct yaffs_dev *dev) |
0e8cc8bd WJ |
163 | { |
164 | return YAFFS_OK; | |
165 | } |